Self-Regulating Suction Adapter for Drill Dust Extraction
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Solution Overview
Problem
Existing suction-extraction devices often provide a higher air volume flow than can be utilized by drilling tools, leading to inefficiencies due to additional air being drawn from the surroundings through adapters, which results in suboptimal performance during drilling operations.
Innovation Solution
A suction-extraction adapter with a valve unit that adjusts air flow based on flow parameters, such as pressure or volume flow rate, using a movable closure element and restoring element to optimize air intake, allowing for automatic control and efficient adaptation to the suction power of the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If additional air intake openings are provided in the adapter housing, then the suction-extraction device can draw sufficient air for high air volume flow, but unnecessary air is drawn from the surroundings leading to inefficiencies
Solution Approach 1:
The air intake opening is equipped with a valve unit that can dynamically adjust its opening degree based on the actual suction requirements. The closure element can move between fully open and partially closed positions, allowing the system to adapt the air intake quantity to match the drilling tool's needs, thereby preventing energy waste from excessive air intake while ensuring sufficient air supply when needed.
2Quantity of substance
If the air intake opening is kept open, then sufficient air volume flow is provided for high-power suction devices, but the air volume flow cannot be adapted to lower suction power devices
Solution Approach 1:
The valve unit changes the parameter of air intake quantity by adjusting the opening degree of the air intake opening. The closure element can be positioned at different locations along its travel path, creating variable flow restrictions that adapt the air volume flow to match different suction power levels. This allows the same adapter to work efficiently with both high-power and lower-power suction-extraction devices.
3Adaptability or versatility
If a valve unit is added to control air intake, then air volume flow can be adapted to suction power, but the device complexity increases
Solution Approach 1:
The valve unit is designed to be self-regulating, using the suction pressure differential itself to control the closure element position. When suction pressure is high, the pressure differential automatically opens the air intake opening wider; when suction pressure is low, the opening narrows automatically. This eliminates the need for external actuators, sensors, or complex control systems, achieving adaptability through passive self-service mechanisms.
4Quantity of substance
If the closure element is held in a specific position, then air intake is controlled, but additional components are required increasing complexity
Solution Approach 1:
The valve unit utilizes pneumatic principles where the suction pressure differential created by the suction-extraction device itself acts on the closure element to control its position. The pressure differential naturally pushes the closure element to appropriate positions without requiring motors, solenoids, or other active components. This pneumatic self-control mechanism achieves precise air flow regulation while minimizing additional components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables the suction-extraction adapter to efficiently match air volume flow with the suction power of the device, improving the extraction of drill cuttings and reducing unnecessary air intake, thereby enhancing drilling performance and user comfort.
Implementation Method 1
the closure element can be controlled in a position in dependence on a flow parameter, in particular in dependence on a suction pressure
Implementation Method 2
the closure element can be returned into an initial position by means of a restoring element
Data Source
AI summary
A suction adapter for a drilling tool with a conduit includes a housing, at least one air intake port, and a valve unit. The valve unit is configured to open the air intake port as a function of a flow parameter.